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Field    Columbian  Museum. 

Publication  No.   113. 

Geological  Series.  Vol.  II,  No.  8. 


A  LIST   OF    DEVONIAN   FOSSILS 

COLLECTED  IN   WESTERN 

NEW  YORK, 

WITH  NOTES  ON  THEIR  STRATI- 
GRAPHIC  DISTRIBUTION. 


Arthur  Ware  Slocom, 
Assistant  in  Paleontology. 


Oliver  Cummings  Farrington,  Ph.  D. 
Curator,  Department  of  Geology. 


j$  Chicago,  U.  S.  A. 

June   1,   1906. 


A    LIST   OF   DEVONIAN   FOSSILS    COLLECTED   IN   WESTERN 
NEW   YORK,   WITH  NOTES   ON   THEIR   STRATI- 
GRAPHIC    DISTRIBUTION. 


BY   ARTHUR  W.  SLOCOM. 


The  material  upon  which  this  paper  is  based,  was  collected  during 
the  month  of  September,  1904,  and  is  now  a  part  of  the  Paleonto- 
logical  collections  of  this  Museum.  Especial  effort  was  made  while 
collecting,  not  only  to  obtain  as  complete  a  fauna  as  possible  at  each 
locality  visited,  but  to  have  the  number  of  specimens  collected  of 
the  various  species  represent,  as  nearly  as  might  be,  their  relative 
abundance  at  the  different  localities. 

In  the  Hamilton  or  Middle  Devonian  rocks  of  Western  New  York 
and  Canada  there  are  three  well-defined  beds  of  varying  thickness 
but  of  constant  lithological  characters.  The  upper  of  these  beds  is 
a  shale  called  the  Moscow  shale;  the  middle  bed  is  a  crystalline  lime- 
stone varying  in  thickness  from  il/i  to  3  feet,  called  the  Encrinal 
limestone;  and  the  lowest  bed  is  the  Hamilton  shale.  The  Encrinal 
limestone  is  present  at  so  many  of  the  outcrops,  and  is  so  easily  rec- 
ognized that  it  serves  as  a  datum  line  for  correlating  the  shales  either 
above  or  below  it.  At  none  of  the  localities  visited  by  the  writer  was 
there  enough  of  the  beds  exposed  to  give  any  idea  of  the  thickness  of 
the  series,  but  measurements  made  at  other  places  by  other  authors 
show  that  in  a  general  way  the  beds  may  be  said  to  gradually  thin 
out  towards  the  West.  Thus  at  *Utica,  New  York,  where  the  meas- 
ure was  obtained  from  a  well,  Prosser  found  a  thickness  of  1,142  feet. 

At  the  fLivonia  salt  shaft  in  Livingston  county,  about  124  miles 
west  of  Utica,  Luther  reports  the  thickness  of  the  beds  as  517  feet, 
and  at  the  f Crystal  salt  well  near  Wyoming,  about  23  miles  farther 
west,  a  thickness  of  407  feet.  At  %  Eighteen  Mile  Creek  near  Buffalo, 
about  45  miles  west  of  Wyoming,  Shimer  and  Grabau  report  that 
the  beds  measure  only  76  feet.  At  JThedford,  Ontario,  about  130 
miles  still  farther  west,  a  thickness  of  81  feet  is  reported  by  the  same 


•Am.  Geologist,  Vol.  VI,  p    202. 

t  47th  N.  Y.  State  Museum  Report,  p.  258. 

%  Bull.  Geol  Soc.  of  Am.,  Vol.  13,  p.  162. 


257 


258  Field  Columbian  Museum — Geology,  Vol.  II. 

authors.  Thus  it  appears  that,  in  passing  from  Utica  to  Eighteen 
Mile  Creek,  a  distance  of  a  little  less  than  200  miles,  the  beds  thin 
from  1,142  to  76  feet.  In  the  next  130  miles,  however,  there  is  com- 
paratively little  change  in  thickness. 

The  Moscow  and  Bethany  localities  have  been  well  known  col- 
lecting grounds  for  many  years.  H.  A.  Green*  called  attention 
to  them  as  far  back  as  1866,  and  still  the  supply  of  well  preserved 
fossils    is  apparently  as  good  as  ever. 

Moscow :  The  outcrop  at  Moscow,  from  which  the  Moscow  shale 
received  its  name,  afforded  to  the  writer  its  characteristic  fauna. 
Fossils  were  most  abundant  at  the  exposures  along  the  creek  on  the 
farm  of  Mr.  W.  H.  De Forrest  (Plate  LXXIX)  about  a  mile  northeast  of 
town.  Another  exposure  was  found  about  a  quarter  of  a  mile  north 
of  the  station  where  a  creek  passes  under  the  railway  track,  and 
by  following  the  creek  up  stream,  some  brachiopods  were  obtained. 

Near  East  Bethany,  six  exposures  were  visited.  These  are  indi- 
cated on  the  map  (Plate  LXXX)  by  the  field  numbers,  B4  to  B9 
inclusive. 

B4  is  situated  about  a  mile  and  a  half  west  of  the  station  at  the 
point  where  the  railroad  cuts  through  the  top  of  the  divide  between  the 
va  ley  of  the  Genesee  River,  which  empties  into  Lake  Ontario,  and 
that  of  Tonawanda  Creek,  which  empties  into  the  Niagara  River 
only  a  short  way  from  Lake  Erie.  This  exposure  is  about  three 
quarters  of  a  mile  in  length,  and  has  a  depth  of,  perhaps,  15  feet, 
where  the  road  crosses  it.  From  this  point  it  tapers  down  to  nothing 
at  each  end.  This  ridge  is  the  highest  elevation  of  land  in  this 
locality:  Fossil  corals  and  brachiopods  are  especially  abundant 
here,  but  many  of  the  other  classes  of  invertebrates  are  also  found. 
Hypsocrinus  fieldi,  described!  by  Frank  Springer,  and  the  author, 
came  from  this  locality.  The  Encrinal  limestone  appears  at  the 
top  of  the  exposure,  so  that  the  shale  from  which  the  fossils  were 
obtained  is  the  upper  part  of  the  Hamilton  shale. 

B5  is  situated  about  a  mile  southeast  from  the  station  at  the  Peck 
&  Wood  tile  factory.  Here  the  shale  is  weathered  so  that  it  can  be 
plowed.  A  layer  about  a  foot  thick  at  the  top,  is  very  rich  in  brachio- 
pods. Neucleospira  concinna  is  found  here,  with  the  hair-like  spines 
preserved.      Tropidoleptus   carinatus   is  very  abundant  and  attains 


*  Am.  Jour.  Sci.,  and  Ser.,  Vol.  41,  pp.  121-23. 

t  Field  Col.  Mus.  Pub.,  Geol.  Series,  Vol.  II,  pp.  267-271. 


June,  1906.  Devonian  Fossils — Slocqm.  259 

a  much  larger  size  than  at  Moscow,  or  at  any  of  the  other  outcrops 
at  Bethany,  with  the  possible  exception  of  B9.  Many  of  the  shells 
of  this  species  have  parasites  attached  to  them.  Among  these  para- 
sites occur  three  species  of  bryozoans,  worm  tubes,  and  an  inarticu- 
late brachiopod.  Below  this  layer  rich  in  brachiopods,  the  shale  is 
comparatively  free  from  fossils.  A  few  specimens  of  Pleurodictyum 
stylopora  were  the  only  fossils  obtained  here  by  the  writer. 

B6  is  situated  on  the  roadside  between  the  tile  factory  and  the 
station.  It  is  an  outcrop  of  a  hard,  black  shale,  lying  quite  a  little 
higher  than  either  B5,  B7,  or  B9.  but  whether  it  is  above  the  Encrinal 
limestone,  the  writer  was  unable  to  determine.  This  outcrop  was 
quite  small  and  comparatively  unimportant. 

B7  marks  a  number  of  exposures  along  the  banks  of  White  Creek, 
a  short  distance  southeast  of  East  Bethany.  This  locality  afforded 
corals,  brachiopods,  etc.  Monroe*  reports  finding  Goniatites  in  pyrite 
nodules  at  this  place,  but  none  was  secured  by  the  writer. 

B8  is  located  a  mile  and  a  half  west  of  B4,  at  the  point  where  a 
small  tributary  of  Tonawanda  Creek  runs  near  the  track.  Along 
the  banks  of  the  tributary  are  piles  of  weathered  shale  in  which 
quantities  of  bryozoans,  corals,  and  gastropods  were  found.  Just 
west  of  here  where  the  road  crosses  the  track,  a  cut  affords  a  good 
exposure  of  a  black  laminated  shale  similar  to  certain  upper  layers 
at  Moscow,  which  is  practically  barren  of  fossils,  but  on  top  of  this, 
is  a  thin  layer  in  which  some  large  brachiopods  were  found.  The 
shale  near  the  brook  does  not  appear  to  be  in  situ,  and  probably 
was  brought  there  at  the  time  the  railroad  was  built,  from  a  small 
cut  just  east  of  its  present  position,  where  a  similar  shale  is  found. 
The  Encrinal  limestone  is  exposed  in  the  bed  of  this  brook,  with  a 
moderate  dip  towards  the  west.  This  would  determine  both  the 
black  and  the  fossiliferous  shales  to  belong  to  the  upper  group,  or 
Moscow  shale.  While  these  beds  are  much  lower  topographically 
than  those  at  B4,  they  are  undoubtedly  higher  geologically. 

B9  is  found  by  following  White  Creek  up  stream  from  near  the 
tile  factory,  to  several  exposures  where  brachiopods  abound.  As 
might  be  expected  from  the  proximity  of  their  location,  the  fossils 
found  at  these  outcrops  are  similar  to  those  of  B5.  These  outcrops 
appear  to  be  the  upper  portions  of  the  beds  whose  base  is  exposed 
in  the  clay  pit  at  B5. 

Windom  is  situated  about  8  miles  southeast  of  the  business  center 


*  Bull.  Wis.  Nat.  Hist.  Soc,  Vol.  a,  p.  57. 


260  Field  Columbian  Museum — Geology,  Vol.  II. 

of  Buffalo.  Near  the  railway  bridge  the  Encrinal  limestone  is  ex- 
posed with  both  the  Moscow  and  Hamilton  shales:  All  may  also  be 
seen  along  the  banks  of  the  South  Branch  of  Smokes  Creek.  Between 
the  railroad  and  the  creek,  large  piles  of  weathered  shale  and  blocks 
of  limestone  are  to  be  found  in  which  fossils  are  abundant.  Brachio- 
pods  and  corals  are  the  predominating  fossils,  and  a  fine  series  of  well 
preserved  specimens  was  collected,  but  as  most  of  them  came  from 
the  dump  piles  or  talus,  they  are  of  little  value  in  determining  the 
distribution  of  the  species  in  the  three  horizons. 

After  the  identification  of  this  material,  the  various  species  were 
tabulated  to  see  if  the  geological  position  of  B5,  B6,  B7,  and  B9 
in  relation  to  the  Encrinal  limestone  could  be  determined.  Upon 
comparison  of  these  faunas  with  those  of  Moscow,  B4,  and  B8,  it 
was  not  only  found  impossible  to  determine  the  position  of  the  un- 
known faunas,  but  also  it  was  found  that  the  Moscow  fauna  did  not 
bear  the  relation  to  those  of  B4  and  B8,  that  might  be  expected.  In 
order  to  make  the  range  of  localities  and  faunas  studied  as  complete 
as  possible,  published  lists  of  Hamilton  fossils  by  various  authors 
from  other  localities  were  referred  to  and  mention  of  any  of  the  species 
collected  by  the  present  writer  noted.  It  was  then  found  by  a  study  of 
the  table,  that  while  at  different  localities,  the  faunas  could  readily 
be  separated  into  "upper"  and  "lower,"  on  correlating  the  localities, 
these  distinctions  could  not  be  maintained.  Thus  Aulopora  serpens 
occurs  at  Bethany  in  both  the  Moscow  and  Hamilton  beds,  while  at 
Thedford  it  is  only  reported  from  the  Moscow,  at  Eighteen  Mile 
Creek  only  from  the  Hamilton,  and  at  Cayuga  Lake,  from  both. 
The  two  species  of  Craspedophyllum  are  not  reported  below  the  Encri- 
nal limestone  at  either  of  the  other  localities,  but  at  Bethany  C. 
archiaci  is  very  abundant  all  through  the  series,  and  C.  subcaspitosum 
is  found  only  in  the  Hamilton.  Favosites  argus  is  reported  only  from 
the  Moscow  at  Cayuga  Lake,  and  only  from  the  Hamilton  at  Eight- 
een Mile  Creek,  but  at  Bethany  it  is  found  in  both  layers.  Strep- 
telasma  rectum  is  reported  as  extending  through  the  series,  and  is  so 
found  at  Bethany,  but  the  allied  species  S.  ungula  has  been  reported 
only  from  the  Moscow.  At  Bethany,  however,  it  is  found  in  both 
the  Moscow  and  Hamilton.  The  same  may  be  said  of  Rhipidomella 
vanuxemi  and  R.  penelope.  They  are  both  found  through  the  series 
at  Bethany,  but  while  the  former  is  so  reported,  the  latter  is  reported 
cnly  ficm  the  Moscow.  Stropheodonta  concava  is  reported  only  from 
above  the  Encrinal  limestone  at  Thedford  and  Cayuga  Lake,  and 


June  1906.  Devonian  Fossils — Slocom.  261 

only  in  and  below  the  Encrinal  limestone  at  Eighteen  Mile  Creek, 
but  at  Bethany  it  occurs  both  above  and  below.  Stropheodonta 
detnissa  is  found  throughout  the  series  at  Bethany,  and  also  at  Thed- 
ford,  but  at  Eighteen  Mile  Creek  it  is  reported  in  the  Encrinal  bed 
and  below,  and  at  Cayuga  Lake  only  in  the  Hamilton.  Tropidoleptus 
carinatus  is  found  through  the  series  at  both  Bethany  and  Cayuga 
Lake,  but  at  Eighteen  Mile  Creek  in  the  Encrinal  limestone  and  be- 
low, and  at  Thedford  only  in  the  Hamilton. 

It  is  of  interest  to  note  that  in  the  Bethany  fauna  the  range  of 
some  species,  e.  g.  Aulopora  serpens  and  Tropidoleptus  carinatus 
corresponds  to  the  Cayuga  Lake  fauna;  that  of  others,  e.  g.  Stroph- 
eodonta demissa,  corresponds  to  the  Thedford  fauna,  and  Stropheodonta 
concava  and  Favosites  argus  have  as  great  a  range  at  Bethany  as  at 
all  the  other  localities  combined.  Hence  it  is  not  safe  to  determine 
the  position  of  isolated  beds,  in  regard  to  the  Encrinal  limestone, 
by  the  composition  of  the  fauna.  A  similar  conclusion  was  reached 
by  Cleland*  in  his  study  of   the  Hamilton   beds  at    Cayuga  Lake. 

The  following  table  represents  the  amount  of  material  collected 
by  the  writer,  with  the  exception  of  the  bryozoans  from  "B8."  Of 
these  a  large  series,  both  of  species  and  specimens,  was  secured,  but 
as  they  have  not  yet  been  identified,  they  are  not  included.  The 
figures  against  each  species  in  the  table  indicate  the  number  of  speci- 
mens collected  by  the  writer.  The  letters  indicate  that  the  same 
species  have  been  reported  by  other  authors  from  Thedford,  Eighteen 
Mile  Creek,  or  Cayuga  Lake,  and  the  particular  letter  indicates  the 
bed  in  which  they  were  found.  Thus  M,  indicates  Moscow  shale; 
E,  Encrinal  limestone,  and  H,  Hamilton  shale.  The  papers  con- 
sulted for  mention  of  these  species  are  the  following:  Hamilton 
Group  of  Thedford,  Ontario,  by  H.  W.  Shimer  and  A.  W.  Grabau, 
Bull.  Geol.  Soc.  Am.  Vol.  13,  p.  149,  1901 ;  Geology  and  Paleontology 
of  Eighteen  Mile  Creek  and  the  Lake  Shore  Sections  of  Erie  County, 
by  A.  W.  Grabau,  Bull.  Buffalo  Soc.  Nat.  Sci.  Vol.  VI,  1899;  A 
Study  of  the  Fauna  of  the  Hamilton  Formation  of  the  Cayuga 
Lake  Section  in  Central  New  York,  by  H.  F.  Cleland,  Bull.  206,  U.  S. 
Geological  Survey,  1903. 


*  Bull.  206.  U.  S.  G.  S.,  p.  91. 


DISTRIBUTION  OF  SPECIES. 


.SP<u 


S* 


PORIFERA. 
Astraeospongia    hamiltonensis 
M.  &  W. 

CCELENTERATA. 

"Alveolites  goldfussi  Billings   .... 

Amplexus  intermittens  Hall 

A.  hamiltoniae  Hall   

A.  yandelli  E.  &  H 

Aulopora  serpens  Goldf 

A.  tubaeformis  Goldf 

A.  erecta  Rominger 

A.  sp 

Blothrophyllum  conatum  Hall.  . 

Ceratopora  jacksoni  Grabati  .... 

Craspedophyllum  archiaci  Bill- 
ings  

C.  subcaespitosum  Nich.    .  ; 

C.  sp 

Cyathophyllum  gradatum  Hall .  . 

C.  nanum  Hall 

C.  nepos  Hall 

C.  palum  Hall 

C.  perlamelosum  Hall 

C.  robustum  Hall 

C.  sp 

Cystiphyllum  americanum  E  &H 

C.  conifolle  Hall 

C.  corrugatum  Hall 

C.  varians  Hall 

Favosites  arbuscula  Hall 

F.  argus  Hall 

F.  billingsi  Rominger 

F.  clausus  Rominger 

F.  emmonsi  Rominger 

F.  hamiltonias  Hall 

F.  hemisphericus  turbinatus 
Billings 

F.  nitella  Rominger 

F.  placenta  Romtnger    

F.  tuberosa  Rominger 

Heliophyllum  arachne  Hall 

H.  confluens  Hall 

H.  dejener  Hall 

H.  halli  E.&H 

H.  irregulare  Hall 

H.  juvene  Rominger 

H.  reflexum  Hall 

Hadrophyllum  woodi  Grabau  .  . 


13 


13 


1 

4 

10 

36 

17 

163 

64 

38 

11 

6 

4 

5 

3 

22 


24 
3 
6 

44 

4 

15 

J36 

3 


5 

122 

21 

48 

26 


2 

6 

6 

24 

31 

141 

61 
7 

49 
5 
6 


4 

7 

113 


M 


M 


M 


M 


E 

M 


M 


M 


M 

M 


EM 
M 

M 


M 

M 

H 

H 


M-H 


M 


M 
M-H 


M 


M-H 


M-H 


it) 


262 


June,  1906. 


Devonian  Fossils — Slocom. 


263 


is 

a 


S-3 


CCELENTERATA— Con 

Lichenalia  sp 

Michelinia  insignis  Rominger. 
Monilopora  antiqua  Whitfield 
Pleurodictyum  dividua  Hall . 

P.  stylopora  Eaton 

Streptelasma  rectum  Hall 

S.  ungula  Hall 

Stromatopora  sp 

Syringopora  sp 

Trachypora  limbata  Eaton .  .  . 
Zaphrentis  exigua  Billings .  .  . 

Z.  simplex  Hall 

Z.  sp 

PELMATOZOA. 
Hypsocrinus  fieldi  Spr.  &  Si. 
Ancyrocrinus  bulbosus  Hall  . 

Codaster  hindei  E.  &  C 

Pentremitidea  sp 

Crinoid  plates 

Crinoid  roots 

Crinoid  stems 

Crinoid  arms , 

VERMES. 
Autodetus  lindstromi  Clark.  . 
Cornulites  hamiltoniae  Grabau 
Spirorbis  angulatus  Hall .  .  .  .  , 
S.  omphaloides  Nichols  . 

Worm  teeth 

Fish  bone 

BRYOZOA. 
Botryllopora  socialis  Nich 
Hederella  canadensis  Nich 

H.  cirrhosa  Hall , 

H.  filliformis  Billings 

Monotrypa  fruticosa  Hall  .  .  .  . 

M.  furcata  Hall     

Stictopora  incisurata  Hall.  .  .  . 

BRACHIOPODA. 
Ambocoelia  umbonata  Conrad 

A.  nana  Grabau 

Athyris  spiriferoides  Eaton  .  .  . 

A.  fultonensis  Swallow  

Atrypa  reticularis  Linn  ...... 

A.  spinosa  Hall 

Camarotoechia  billingsi  Hall  .  . 

C.  horsfordi  Hall 

C.  sappho  Hall 

C.  tethys  Billings   , 

Chonetes  coronatus  Conrad  .  .  . 

C.  lepidus  Hall 

C.  mucronatus  Hall 

C.  scitulus  Hall 

C.  vicinus  Castelnau 

Cranana  romingeri  Hall 


10 

2 
J°3 

6 
8 


26 


14 


58 


14 


19 

106 


M 


II 


M 


M 
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M 


M 

M 
II 
M 


M 


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M-H 

M-H 

M 


H 

M-H 
M 


ME 


M-H 


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M-H 
EH 

M-H 

H 
M-H 

M-H 

M 

M-H 
EH 

EH 
M-H 
M-H 
M-H 
M-H 
H 


M-H 
M-H 


M 


II 


M 

M-H 

M 
M-H 
M-H 
M-H 


ME 
M-H 

M-H 
M-H 
M-H 
M-H 

M 


264 


Field  Columbian  Museum — Geology,  Vol.  II. 


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2 

20 

1 

1 

1 

45 
7 

b 

E 

4 

4 

3 

3 

3 

12 

s 

6 

1 

10 

7 

22 

6 

2  b 

55 

20 

76 

M-H 

7 

3 
5i 

4 

5 
37 

2 
20 

M 
M-H 

7 

24 

1 

128 

5 

4 

M 

1 

6 

2 

5 

5 

M 

1 

9 

1 
3 

»3 

9 
6 

106 

6 

68 

29 

E 

4 

2 

1 

1 

H 

2 

1 

1 

1 

M 

3 

3 

1 

3 


BRACHIOPODA— Con. 

Crania  crenistriata  Ha// 

Craniella  hamiltoniae  Hall  ...... 

Cryptonella  planirostris  Hall .... 

C.  rectirostris  Hall 

Cyclorhina  nobilis  Hall 

Cyrtina  hamiltonensis  Hall 

C.  hamiltonensis  recta  Hall 

Delthyris  consobrina  d'Orb 

D.  sculptilis  Hall 

Eunella  lincklaeni  Hall 

Leiorhynchus  dubium  Hall 

L.  laura  Billings 

Lingula  sp 

Meristella  barrisi  Hall 

M.  haskinsi  Hall 

Nucleospira  concinna  Hall 

Orthothetes  arctostriatus  Hall  .  . 

O.  chemungensis  Conrad 

Parazyga  hirsuta  Hall 

Pholidostrophia  iowaensis  Owen. 
Productella  spinulicosta  Hall  .  .  . 
Reticularia  fimbria ta  Conrad .... 

Rhipidomella  leucosia  Hall 

R.  penelope  Hall 

R.  vanuxemi  Hall  . 

Roemerella  grandis  Vanuxem .... 

Spirifer  acuminatus  Conrad 

S.  angustus  Hall 

S.  audaculus  Conrad 

S.  audaculus  macronotus  Hall. 

S.  divarioatus  Hall 

S.  granulosus  Conrad 

S.  granulosus  clintoni  Hall 

S.  marcyi  Hall 

S.  pennatus  Atwater 

Stropheodonta  concava  Hall.  .  .  . 

S.  demissa  Conrad 

S.  inaequistriata  Conrad 

S.  perplana  Conrad    

S.  plicata  Hall 

S.  textilis  Hall 

S.  sp 

Terebratula  sp 

Tropidoleptus  carina tus  Conrad. . 

PELECYPODA 

Actinopteria  boydi  Conrad 

A.  decussata  Hall    

Aviculopecten  princeps  Conrad.  . 
Conocardium  eboraceum  Hall.  . 
Cypricardella  bellistriata  Conrad 

Elymella  nuculoides  Hall 

Goniophora  hamiltonensis  Hall.  . 

Grammy sia  arcuata  Conrad 

Leiopteria  Conradi  Hall 

Modiomorpha  concentrica  Conrad 


H 
M-H 
EH 

H 

M-H 
H 
M 
E 

H 
M-H 


E 
M-H 
M-H 
M-H 

EH 


M-H 
EH 


M-H 
EH 
EH 
M-H 
M-H 
H 


HE 
H 

EH 
EH 

H 
H 


June  1906. 


Devonian  Fossils — Slocom. 


265 


'£     c3 


i 
0 
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0 

n 

0 

n 

pa 

ad 

n 

6- 

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c 

t 

0 

Si 

% 

is 

3 

1 

1 

1 

H 

1 

1 

3 

1 

H 

1 

H 
E 

3 

H 

1 

1 

3 
2 

18 

5 
14 

2 
10 

1 

1 
1 

H 

H 

EH 

E 

EH 

2 

1 

2 

37 

2 

H 

1 

2 

4 
8 

H 

H 
H 

4 

16 

4 

5 
3 

1 

155 

9 

17 

4 

1 
6 

M-H 
H 

M 

M-H 
H 

H 

M-H 

IS 

1 

M 

M-H 

1 

EH 

3 

1 

.   H 

32 

29 
1 

1 

4 

1 

104 
2 

3 

19 

M-H 
H 

M-H 
H 
H 

PELECYPODA— Con. 

Nucula  sp 

Nuculites  nyssa  Hall 

Orthonota  undulata  Conrad.  .  .  . 
Pateoneilo  constricta  Conrad  .  . 
Pholadella  radiata  Conrad  .... 
Plethomystus  oviformis  Conrad 
Pterinopectin  undosus  Hall.  .  .  . 
Sphenotus  truncatus  Conrad ... 
Tellinopsis  subemarginatus  Con- 
rad   

GASTROPODA 

Bellerophon  sp 

Platyceras  attenuatum  Hall  .  .  . 

P.  bucculentum  Hall 

P.  carinatum  Hall 

P.  conicum  Hall 

P.  dumosum  rarispinum  Hall  .  . 

P.  echinatum  Hall 

P.  erectum  Hall 

P.  symmetricum  Hall 

P.  thetis  Hall 

Platyostoma  lineatum  Conrad .  . 
P.  lineatum  emarginatum  Grab . 

P.  turbinatum  Hall 

Pleurotomaria  itys  Hall 

P.  sp 

PTEROPODA 

Styliolina  fissurella  Hall 

CEPHALOPODA 

Orthoceras  crotalum  Hall 

TRILOBITA 

Dalmanites  boothi  Green 

D.  boothi  calletelles  Green 

Homalonotus  dekayi  Green 

Phacops  rana  Green 

Proetus  rowi  Green   

P.  curvimarginatus  Hall 


M-H 
M-H 
M-H 
M-H 
M-H 


M-H 


y 

M 


M-H 

M 
M-H 

M-H 
M-H 

M-H 

M 
EH 
M-H 

E 


UNIVERSfTY  OF  ILLINOIS-URBANA 


3  0112  084203212 


